/***************************************************************************/
/*                                                                         */
/*  pfrload.h                                                              */
/*                                                                         */
/*    FreeType PFR loader (specification).                                 */
/*                                                                         */
/*  Copyright 2002 by                                                      */
/*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
/*                                                                         */
/*  This file is part of the FreeType project, and may only be used,       */
/*  modified, and distributed under the terms of the FreeType project      */
/*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
/*  this file you indicate that you have read the license and              */
/*  understand and accept it fully.                                        */
/*                                                                         */
/***************************************************************************/


#ifndef __PFRLOAD_H__
#define __PFRLOAD_H__

#include "pfrobjs.h"
#include FT_INTERNAL_STREAM_H


FT_BEGIN_HEADER

#ifdef PFR_CONFIG_NO_CHECKS
    #define PFR_CHECK(x)  do {} while (0)
#else
    #define PFR_CHECK(x)  do \
    { \
        if (p + (x) > limit) \
            goto Too_Short; \
    } while (0)
#endif

#define PFR_NEXT_BYTE(p)    FT_NEXT_BYTE(p)
#define PFR_NEXT_INT8(p)    FT_NEXT_CHAR(p)
#define PFR_NEXT_SHORT(p)   FT_NEXT_SHORT(p)
#define PFR_NEXT_USHORT(p)  FT_NEXT_USHORT(p)
#define PFR_NEXT_LONG(p)    FT_NEXT_OFF3(p)
#define PFR_NEXT_ULONG(p)   FT_NEXT_UOFF3(p)


/* handling extra items */

typedef FT_Error
(*PFR_ExtraItem_ParseFunc)(FT_Byte* p,
                           FT_Byte* limit,
                           FT_Pointer data);

typedef struct  PFR_ExtraItemRec_
{
    FT_UInt type;
    PFR_ExtraItem_ParseFunc parser;

} PFR_ExtraItemRec;

typedef const struct PFR_ExtraItemRec_* PFR_ExtraItem;


FT_LOCAL(FT_Error)
pfr_extra_items_skip(FT_Byte * *pp,
                     FT_Byte * limit);

FT_LOCAL(FT_Error)
pfr_extra_items_parse(FT_Byte * *pp,
                      FT_Byte * limit,
                      PFR_ExtraItem item_list,
                      FT_Pointer item_data);


/* load a PFR header */
FT_LOCAL(FT_Error)
pfr_header_load(PFR_Header header,
                FT_Stream stream);

/* check a PFR header */
FT_LOCAL(FT_Bool)
pfr_header_check(PFR_Header header);


/* return number of logical fonts in this file */
FT_LOCAL(FT_Error)
pfr_log_font_count(FT_Stream stream,
                   FT_UInt32 log_section_offset,
                   FT_UInt * acount);

/* load a pfr logical font entry */
FT_LOCAL(FT_Error)
pfr_log_font_load(PFR_LogFont log_font,
                  FT_Stream stream,
                  FT_UInt face_index,
                  FT_UInt32 section_offset,
                  FT_Bool size_increment);


/* load a physical font entry */
FT_LOCAL(FT_Error)
pfr_phy_font_load(PFR_PhyFont phy_font,
                  FT_Stream stream,
                  FT_UInt32 offset,
                  FT_UInt32 size);

/* finalize a physical font */
FT_LOCAL(void)
pfr_phy_font_done(PFR_PhyFont phy_font,
                  FT_Memory memory);

/* */

FT_END_HEADER

#endif /* __PFRLOAD_H__ */


/* END */